A United Airlines flight made an emergency landing at Dover Air Force Base Monday night.

United Airlines 1559 was headed from Newark International Airport to Palm Beach International when the pilot declared an emergency due to a mechanical problem.

ABC News' Jeffrey Cook reports, "The pilots of #UA1559 reported 'trouble with the elevator' to air traffic controllers before landing at Dover Air Force Base. Such a problem would lead to controllability challenges. Hence the diversion to the long runways at the Air Force Base."

Some visuals surfacing from the #UA1559 incident. Passengers are still at Dover Air Force Base. United says they are working on getting them on their way to @PBI_Airport.